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NSN 5306-00-639-2350

Close Tolerance Hex Head Bolt

About this product

3.328 inches fastener length, hexagon head style, between 0.203 inches and 0.235 inches head height, width between flats: between 0.553 inches and 0.565 inches .

Manufacturer part number AN176H32 for national stock number 5306006392350.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-00-639-2350.

  • MPN or Model

    AN176H32

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • NMF (National Motor Freight)
    093486 - Bolts, Nuts Or Screws, NOI (sub 3)
  • Unit Weight (Est.)
    0.2 lb
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.640 inches
  • Fastener Length
    3.328 inches
  • Head Style
    Hexagon
  • Head Height
    Between 0.203 inches and 0.235 inches
  • Width Between Flats
    Between 0.553 inches and 0.565 inches
  • Hole Diameter
    0.070 inches
  • Grip Diameter
    Between 0.3737 inches and 0.3742 inches
  • Shank Unthreaded Hole Diameter
    0.106 inches first hole
  • Thread Diameter
    0.375 inches
  • Grip Length
    2.688 inches
  • Hole Quantity
    1
  • Hole Type
    Drilled
  • Thready Qty Per Inch (tpi)
    24
  • Min. Tensile Strength (psi)
    125000 pounds per square inch
  • Hardness Rating
    26.0 rockwell c and 32.0 rockwell c
  • Hole Configuration Style
    Hexagon flats
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    3.126 inches first hole
  • Surface Finish
    63.0 microinches grip
  • Material
    Steel comp 8740 or steel comp 8630 or steel comp 8735 or steel comp 4037 or steel comp 4140 or steel comp 4130
  • Surface Treatment
    Cadmium and chromate
  • Surface Treatment Specification
    Qq-p-416 type 2 cl 3 federal specification all treatment responses
  • Thread Series Designator
    Unf
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Close Tolerance Bolt

An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see bolt, shear. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see bolt, machine.

Mechanic Bill explains Close Tolerance Hex Head Bolt

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NSN 5306006392350

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
AN176H32 Aeronautical Standards Group
B6812 Military Specifications
86T32 Department Of The Air Force
AN176-32 Aeronautical Standards Group
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